Firmware’s updated when you update macOS, for example High Sierra includes firmware to allow macs to boot up from APFS volumes.
Does your iMac have a flash drive, fusion drive or SATA disk in Apple menu > About this Mac > Storage? _ Regards Sam Mullen +44 (0)7747778022 [email protected] www.macambulance.com MacAmbulance Ltd. Providing Affordable Mac/PC Support and Web Development MacAmbulance Ltd. is a registered company in England & Wales, registration number 8466597 This email is intended solely for the addressed recipients and may contain privileged or confidential information. If you have received this email in error please notify the sender and delete the email immediately. > On 31 Aug 2020, at 14:04, Martin <[email protected]> wrote: > > I have a late 2015 i7 iMac which has been causing me problems with running > slow, the spinning wheel of death etc. I read in MacFormat magazine that a > possible issue was the updating of firmware for this model of iMac. I checked > and it is out of date > Mac model iMac17,1 > > EFI version found 170.0.0.0.0 > > ❌ Need to update EFI firmware > > MacRumours Forum has a thread on this very problem, but still unresolved. > There is an article here > https://eclecticlight.co/2019/10/08/which-efi-firmware-should-your-mac-be-using-version-4/ > > Unfortunately I don't understand what if anything I can do to update the EFI > version. > > > > Any advice? > > > > Thanks > > > > Martin > > -- > You received this message because you are subscribed to the Google Groups > "Sussex Mac User Group" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/smug/5c98ed9a-a2c9-463c-b7be-514569ec5b62n%40googlegroups.com. -- You received this message because you are subscribed to the Google Groups "Sussex Mac User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/smug/F7928776-3D4F-4709-859D-CA08AC5D3689%40macambulance.com.
